Quantitative Aptitude - Arithmetic Ability Questions

If 4x2= 152- 92, then value of x is

What is the value of cosec -7π/6?

If the radius of a circle is increased by 31% its area increases by ______.

Two numbers are in the ratio of 15 : 11. If their HCF is 13, then the greater number is?

The angles of elevation of the top of a tree 220 meters high from two points lie on the same plane are 30° and 45°. What is the distance (in metres) between the two points?

After two successive discounts of 20% and 35%, an article is sold for Rs 50700. What is the marked price (in Rs) of the article?

By increasing the price of entry ticket to a fair in the ratio 11:16, the number of visitors to the fair has decreased in the ratio 19:9. In what ratio has the total collection increased or decreased?

In ΔABC, D and E are points on side AB and AC respectively. DE is parallel to BC. If lengths of AD, DB and AE are 8 cm, 4 cm and 12 cm respectively, what is the length of AC?